/**
 * KH V4.1 — Buttons (Primary, Secondary, Ghost only)
 */

.kh-btn,
button.kh-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--kh-space-8);
  min-height: 40px;
  padding: 0 var(--kh-space-24);
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 600;
  line-height: 1;
  border-radius: var(--kh-radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: transform var(--kh-ease), background var(--kh-ease), border-color var(--kh-ease), box-shadow var(--kh-ease);
}

.kh-btn:hover {
  transform: var(--kh-lift);
}

.kh-btn--primary,
.kh-btn--gradient {
  background: var(--primary);
  color: var(--text);
  border-color: transparent;
  box-shadow: var(--kh-shadow-soft);
}

.kh-btn--primary:hover,
.kh-btn--gradient:hover {
  background: #4a8ff7;
  box-shadow: var(--kh-shadow-hover);
}

.kh-btn--secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
  box-shadow: none;
}

.kh-btn--secondary:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.14);
}

.kh-btn--ghost {
  background: transparent;
  color: var(--muted);
  border-color: transparent;
  box-shadow: none;
  min-height: 36px;
  padding: 0 var(--kh-space-16);
}

.kh-btn--ghost:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

/* Legacy aliases map to allowed types */
.kh-btn--compact {
  min-height: 32px;
  padding: 0 var(--kh-space-16);
  font-size: 13px;
}